105 lines
2.7 KiB
Perl
105 lines
2.7 KiB
Perl
package Slic3r::Polyline;
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use Moose;
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has 'lines' => (
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traits => ['Array'],
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is => 'rw',
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isa => 'ArrayRef[Slic3r::Line]',
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default => sub { [] },
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handles => {
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add_line => 'push',
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},
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);
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after 'add_line' => sub {
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my $self = shift;
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# add a weak reference to this polyline in line objects
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# (avoid circular refs)
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$self->lines->[-1]->polyline($self);
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};
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sub BUILD {
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my $self = shift;
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$_->polyline($self) for @{ $self->lines };
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}
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sub id {
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my $self = shift;
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return join '-', map($_->id, $self->ordered_points(1));
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}
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sub new_from_points {
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my $class = shift;
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my (@points) = @_;
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# we accept Point objects or arrayrefs with point coordinates
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@points = map {
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ref $_ eq 'ARRAY'
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? Slic3r::Point->new('x' => $_->[0], 'y' => $_->[1])
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: $_
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} @points;
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my $polyline = __PACKAGE__->new;
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my $previous_point;
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$previous_point = $points[-1] if $class eq 'Slic3r::Polyline::Closed';
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foreach my $point (@points) {
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if ($previous_point) {
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my $line = Slic3r::Line->new(a => $previous_point, b => $point);
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$polyline->add_line($line);
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}
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$previous_point = $point;
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}
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return $polyline;
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}
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sub points {
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my $self = shift;
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my %points = ();
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$points{$_} = $_ for map $_->points, @{ $self->lines };
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return values %points;
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}
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sub ordered_points {
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my $self = shift;
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my ($as_objects) = @_;
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my $points = [];
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#printf "\n\n==> Number of lines: %d\n", scalar @{ $self->lines };
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my @lines = @{ $self->lines };
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while (@lines && @$points < @{ $self->lines }) {
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#printf "\nNumber of points: %d\n", scalar @{ $points };
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my @temp = @lines;
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@lines = ();
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foreach my $line (@temp) {
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#printf "Line: %s\n", $line->id;
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my $point;
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if (!@$points) {
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# make sure we start from a point not connected to another segment if any
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push @$points, sort { @{$a->lines} <=> @{$b->lines} } $line->points;
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next;
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} elsif ($line->has_endpoint($points->[-1])) {
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$point = +(grep $points->[-1] ne $_, $line->points)[0];
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}
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if (!$point) {
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#printf " no point found, retrying\n";
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push @lines, $line;
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next;
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}
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#printf " adding point %s\n", $point->id;
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push @$points, $point;
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}
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}
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pop @$points
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if $self->isa('Slic3r::Polyline::Closed') && $points->[0]->coincides_with($points->[-1]);
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return @$points if $as_objects;
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$points = [ map [ $_->x, $_->y ], @$points ]; #]
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return $points;
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}
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1;
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